You can't. Measure the amperes simply tells you what the current is.
No, current is always measured in amperes (A). watt hours is the unit for power.
Divide the dollars per kWh by 3,412.14163
Divide 2.13 by 1000.
If you mean dollars PER mwh and cents PER kwh, divide by 10.
If you mean milliamperes to amperes divide by 1000. In other words 1200 milliamperes =1.2 amperes
Look at the power rating of your CD player. There should be a kind of metallic sticker with that information. If it only specifies amperes and volts, multiply the two to get watts (that should be close enough for most practical purposes). Now, assuming you want yearly energy in kWh, convert the power to kilowatts. Then multiply this by the number of hours you use your CD player in a year. The answer is in kWh.
1hp = 746 watts, so 2hp would be 1492 watts, or almost 1.5 kw kWh does not convert to hp, as kWh has a time component.
It depends on the voltage. Please restate the question and provide the voltage. In general, however, simply divide total power by KV to get KA. Remember the KWH is an integral, so you need to back calculate KW. If the month is a 30 day month, then KW is KWH / 30 / 1440. Then, if the load is star, simply divide by three; if the load is delta, divide by three and multiply by 1.732, the square root of 3. Example: 480 three phase running star. 8000 / 30 / 1440 is 185 amperes. 185 divided by 3 is 62 amperes per phase. For delta, that becomes 107 amperes.
A watt is a J/s. So a kWh is 1000 (J * hr)/s. Since there are 3600 seconds in an hour: 1 kWh = 3,600,000 J. There are 4.18 J per calorie, so: 1 kWh = 861,000 cal 665 kWh = 573,000,000 cal
Divide the kWh by 1 million
good question A KWH is 1000 watts of power used for one hour. A 100 watt bulb would need to be on for 10 hours to use 1 KWH.